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25 September 2022
 
  » arxiv » hep-ph/0006083

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The light sigma meson
V.V. Anisovich ; V.A. Nikonov ;
Date 9 Jun 2000
Journal Eur.Phys.J. A8 (2000) 401-404
Subject hep-ph
AbstractIn the framework of the dispersion relation N/D-approach, we restore the low-energy pi-pi (IJ^{PC}=00^{++})-wave amplitude sewing it with the previously obtained K-matrix solution for the region 450-1900 MeV. The restored N/D-amplitude has a pole on the second sheet of the complex-s plane near the pi-pi threshold, that is the light sigma meson.
Source arXiv, hep-ph/0006083
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